Card 27 / 106: Relatively little is known about many obligate anaerobes. Why might this be so?
A) The obligate aerobes are far more numerous, and also far more interesting.
B) It's much harder to provide the right atmospheric environment to cultivate obligate anaerobes, so it's been harder to study them.
C) Only obligate aerobes cause disease, so we've had little reason to study obligate anaerobes.
D) The majority of obligate anaerobes are very nutritionally fastidious, which has slowed their study.

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